/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/ClusterUnionManager.h
Add a new operation to the queue. Note that we currently only support the pending/flush operations for explicit operations. The behavior is legacy anyway so this should be fine.
void AddPendingExplicitIndexOperation ( [FClusterUnionExplicitIndex](API\Runtime\Chaos\Chaos\FClusterUnionExplicitIndex) Index, [EClusterUnionOperation](API\Runtime\Chaos\Chaos\Chaos__EClusterUnionOperation) Op, const [TArray](API\Runtime\Core\Containers\TArray)< [FPBDRigidParticleHandle](API\Runtime\Chaos\Chaos\FPBDRigidParticleHandle) * > & Particles )